A certain chemical reaction has an activation energy of 
What temperature must the reaction be at for the reaction rate to be double the rate at 20
A. 290 K
B. 310 K
C. 330 K
D. 350 K
E. 360 K
B. 310 K
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The angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A) The photo will seem to show only one star rather than two. B) The two stars will appear to be touching, looking rather like a small dumbbell. C) The stars will not show up at all in your photograph. D) You will see two distinct stars in your photograph.
A mirror forms an image in
a. a reflecting telescope. b. your eye. c. a and c. d. b and c.
The angular size of an object increases as the distance to the observer increases.
Answer the following statement true (T) or false (F)
Which of the following radiations has the smallest wavelength?
a. Infrared b. Visible c. Ultraviolet d. X-rays